Thanks for the advice.
So I’v set up my adapter and used the exact code from the Arduino example:
something is happening now which is a massive improvement but it’s still not behaving as I would expect.
I have set it to the hyperterminal settings as described in the tutorial. However the ‘hi’ at the start comes out as something that looks like -|.± (but the + and - are above each other). When I paste it into this window it is as follows: ´.ñ
if I type o I get an upside down capital U, pasted here is the following: ï
this suggests its making the first bit a 1 instead of a 0?
In hyperterminal if I set force incoming data to 7bit ASCII then things are better but the letters are not in capital but the numbers do come out as if caps lock was pressed. The ‘hi’ at the start is still the same.
Also k occasionally comes as an o meaning that it is making the third bit a 1 instead of a 0. This happens on some other letters as well.
I would really appreciate some help I need to finish this by friday!
The end result is that I need to be able to send exact bytes to a serial device from the arduino in standard rs232 format.
Thanks again everyone.